We have the results of the poll "Do you want Lumen to return on Dexter Season 6?" which we posted 2 weeks ago. Let's see what have you voted. Total 1.384 votes. The winner is "Yes''. 59% of you voted that you want Lumen to return in the sixth season. 27% of you voted "No" and the rest 14% voted "I don't have problem if she returns or not."
It looks pretty hard to see Lumen back in Season 6. Eleven days left until the beginning of the filming and there's no word yet about Julia Stiles.